Combined compressor and condenser



APPLICATION FILED AUG.15. I9l9- Patented Sept; 19, 1922.

2 SHEETS-SHEET I- INVENTOR A TTORNE Y A. SELROD.

COMBINED COMPRESSOR AND CONDENSER-.

APPLICATION FILED AUG. 15' I919.

Patented Sept. 19, 1922. j 2 SHEETS-SHEET 2.

R Y mw m M 2 m m wim 4 2 4. a a n w 2 2 j M T -1- 4 ii J 0 4 wm reamed Sept. 19, 1922.

NIT'ED ATENT, OFFIcEQ m sermon, OF1CHIGAGO, ILLI1\TOIS.

columnar co mrnnsson AND connnnsn'n.

Application filed aa ust s. 1919. semi no. 317,723.

To all whom it may concern- Be .it known that I, ALFSELROD, a citizen of the United States, residing at Chicago,

in the county of Cook and State of Illinois,

have invented a new and useful Improvement in Combined Compressors and Conof the system is not large, such for example,

units for domestic as small refrigeratin I purposes. My mvention provides a 'com- I pact construction which is desirable for shown in Fig. 2 taken along the line when the'valve 25 is turned by means of its small units of the kind'referred to, the only parts outside of the compressor unit which are required for the operation of the system, being an expansion valve and the refrigerating coils. Any form. of motor which, is

convenient may be employed to driveithe compressor. My invention will best be understood by reference to .the accompanying drawings showing a preferred embodiment thereof, in which-- Y r Fig.' 1 is a vertical, central, sectionalview through the compressor taken transversely of the crank shaft thereof, I

Fig. 2 is a similarsectional .view through the compressor longitudinally of the crank shaft thereof, y

Fig. 3 is a sectional view of the parts shown in Fig. 1 taken along the line 3-'3, and

Fig. 4 is a sectional view of the parts Similar numerals refer to similar parts throughout the several views.

As shown in the drawings my improved construction consists of a casing 10, preferably of cast iron, having a central bore 11 forming the compressor. cylinder, from the lower portion of whieh an inlet passageway extends for receiving the piping connecting with the expansion or refrigerating coils. A piston 13is located in the c linder 11 and connected with the crank sha t 14' con- 3 meeting rod "The piston 13. ishollow above its lower end and'of skeleton 'con- Y structionpermitting free communication between the passageway 12 and the inside of the pistonat all times and the upper end of the piston-is provided with anintake valve 16 which permits readily through the piston 11 during each down stroke of the piston. Durmg each .up stroke of the piston the valve 16 1s closed and the gas contained in the cyhnder 11 is compressed. The upper the gasto passinto the cylinderend of the cylinder is counterbored to form a seat for the outlet valve '17 which is held in place onisaid seat by a. spring 18 contamed 'withm said-valve between it and the head 19 used to close the upper end of the cylinder. I

The casing 10. has formed in it around the cylinder 11 an annular cored receptaclefor compartment 20 forming a water jacket for the'cylinder and around this compartment said casing has formedin it a second sim- 1lar recess or compartment 2l-forming the condenser, around which the'casing contains a third recess or compartment 22 forming an outer waterjacketffor the condenser.

The head 19 besides enclosing the upper end of the cylinder 11 also encloses the up- I per ends of the water jacket 20 and the condenser 21 and is held in place by suitable screws'as indicated. The outer wall of the caslng 10 extends upwardly above the head 19 and is enclosed by a second head 23 so that the outer water jacket 22 extend supwardly and between the heads 19 and 23.

The head 19 has fonnedcentrally' thereon an upwardly extending boss 24 containin a valve 25 for controlling communication etween an opening 26 into the upper end of the cylinder'll and a passageway 27 formed in the head19 and connecting with the upper portion of the condensing compartment 21. As a result of the construction described,

projecting stem 28 any desired degree of communication'betweenthe cylinder 11 and the condenser 21 maybe established, or said communication may be entirely interrupted.

i resultant'splashing of the oi compressing and, k lower portion. of the condenser= ;commum drawn" from the device and forced pressure exerted upon it the compressor'f through a'suitable expansion valve Into the" isedectively cooled by the cooling water m race condensing system. 'llhe cates by a passageway 31*with the".outsiole of the casing from which pointby suitable" .theheat developed by the compressing 'oper- -ationl-" lUndue heating of the compressor connections and fittingsthe liquid resulting from condensing the compressed asfis; y ell.

expansion or refrigerating coils where the liquid expands into gaseous form, the-retur1if pipe from the expansion coils being cons nectedwith the intake passageway-152 above part of the present invention, their oper- .-systems we I known in the art.

ation bein the same as in refrigerating The lower portion of the 'condensin com-j *pa'rtment or receptacle 21 is preferaby pro- -vided, as shown in Figs. 1 and .4 with a; downwardly extending pocket 32 .to collect the oil which may be carried over from the compressor with the -compressed gas into the d5 ,pocket 32 is connected by suitable .pipe fit condenser. The lowerv portion of the tings 33 and a controlling valve 34: with the crank case iio so that the oil, collected in said p agewa 3'1 extending ng W er may-besupplied to said water 'sired.

and returned to the crank case. The crank case 35 ispreferably wholly enclosed and. contains aquantity of lubricating ell-through which the lower .end' ofvthe connecting rod 15' passes during operation-0t the compressor to lubricate the movin parts by the .A connection 36 withthe lower part of the crank case is providedto' receive suitable fittings to retain the oil in the crankcase and drainthe 49 the used oil'.':

oil therefrom when it isnecessary to renew As indicated incFig. 2 the lowerportion of the water jacket communicates with a to theoutside of the casing 10 by which ecooling. and con jacket and the upper portion of said water jacket communicates 'on the other side of the device by a passageway 38 with the water jacket 22 from which the water discharges throughan opening 39 in the casing." llhe f lower portion of the water jacket 22' is provided with an opening t0 through the easing 10 which may normally be plugged, to

drain the water from the jacket 22, when delln operating my improved device the spring 18 is glven the'requisitetension for v compressing the-gas to the proper degreein the cylinder'll before permitting the valve 17 to open and thus permit the compressed gas to pass into the condenser.- The valve may also by its adjustment cooperate to v regulate the flow-of the compressed gas into the condenser. The gas which commonly is "claims.

ammoniagas although ll may employ any gas which is adapted for use inrefrigeratm s stems, is compressed in the'cylinder-ll' su ciently to liquefy said gas, were it not for cylinderill is prevented by the cooling water in the. jacket 20. The compressed and heated-gas on passing intothe condenser-21.

the jackets20 and 22 on vacoountot the relativelygl'arge surface of the condenser and c this action cools the gas suficiently so that 1 described. The'expansion valve and expanXit is condensed lnto'liquidform and collects sionfcoils are "not shown as they form no .in the" bottom portion. of the condenser,

a llfiromthe above itfiwill be observed that l the same casing in such intimate association that maximum efiiciency of operation may result. Also that all of the connections be tween the compressor and condenser are self contained and no outside fittings are required as a result of which leakage of the compressed gas is eliminated; also that the same'cooling water is edective in cooling the compressor and condenser and furthermore that the same water jacket serves for both the compressor-and condenser and that the passageway from the compressor to the condenser is entirely. watei'jacketed.

While l have shown my invention in the particular embodiment above described, it will be understood that l do not limit myself to this exact construction as I'may 'employ equivalents-blown to the artat the time ofthe filing of this application without departing from the scope of the appended jWhatlclaim-isz' 5 1. In a compressor, the combination of a. cast metal casing having a cylindrical bore and integral annular walls surrounding said bore to form a condensin chamber and water jacket concentric wit saidbore, heads for enclosing said chamber and jacket, ports connecting said chamber and said bore, valve' mechanism for preventing back-flow through said ports, and means forcompressing gas in said bore and forcing it through said ports into said chamber, said water jacket being in two annular portions, one

within and-the other outside of said chamber radially.

2. In a compressor, the combination of a at a distance from said second head, whereby a water jacket is formed between said second and said third heads in communication withsaid outer jacket.

3. In a compressor, the combination of a cast metal casing having a cylindrical bore and integral annular walls surrounding said bore to form a condensing chamber and water jacket concentric with said bore, heads for enclosing said chamber and jacket, ports connecting said chamber and said bore, valve mechanism for preventing back-flow through said ports, an enclosed crank case integral with said casing and below the same a crank shaft in said case, a piston in said bore and devices connecting said piston and crank shaft, said water jacket being in two annular portions, one

within and the other outside of said chamber radially.

4. In a compressor, the combination of acentral cylinder, annular walls surrounding said cylinder to form a condensing chamber and water jacket, heads for enclosing said chamber, water jacket and one end of said cylinder, ports connecting said cylinder and chamber, a check valve'to prevent back-flow through said ports, and means for compressing gas in said cylinder and forcing it through said ports into said chamber, said water jacket being in two annular portions, one within and the other outside of said chamber radially.

5. In a compressor, the combination of a central cylinder, annular walls surrounding said cylinder to form a condensing chamber and water jacket, heads for enclosing said chamber, water jacket and one end of said cylinder, ports connecting said cylinder and chamber, a check valve to prevent back-flow through said ports, and means for compressing gas in said cylinder and forcing it through said ports into said chamber, said water jacket being in two annular portions, one within and the other outside of said chamber radially, one of said heads enclosing said chamber and said inner and outer jackets atone end, a second of said heads being removable and enclosing said cylinder, said chamber and said inner jacket at their other ends, and the third one of said heads enclosing said outer jacket at its other end at a distance from said second head, whereby a water jacket is formed between said second and said third heads in communication with said outer jacket.

In witness whereof, I hereunto subscribe my name this 12th day of August, A. D.

, -ALF salmon. 

